#include <stdio.h>

main(int argc, char *argv[]){
    int lower = atoi(argv[1]);
    int upper = atoi(argv[2]);
    int step = atoi(argv[3]);

    int f, c;

    c = lower;

    printf("摄氏温度与华氏温度的转换程序\n");
    while(c <= upper){
        f = (9 * c/5) + 32;
        printf("%d\t%d\n", c, f);
        c = c + step;
    }
}
